Models help set ecosystem service baselines for restoration assessment.

Area of Science:

• Environmental Science
• Ecosystem Management
• Urban Hydrology

Background:

• Coastal suburban watersheds face significant environmental degradation due to human activities.
• Extensive restoration investments are being made to mitigate these impacts.
• A standardized approach is needed to assess restoration effectiveness and establish baselines.

Purpose of the Study:

• To develop and apply a model-based approach for estimating ecosystem service loss and restoration effectiveness in a coastal suburban watershed.
• To establish a baseline for assessing restoration impacts using model-based estimates.
• To evaluate restoration scale and downstream effects on ecosystem services.

Main Methods:

• Application of two established ecosystem service models.
• Estimation of ecosystem service losses (clean air, clean water, stable climate, water storage) due to suburbanization.
• Use of model-based estimates as a baseline for restoration assessment.

Main Results:

• Suburbanization has led to extensive losses in ecosystem services, particularly flood water storage, since 2001.
• Restoration efforts have been effective in recouping ecosystem services in certain local regions, with benefits most evident for clean water and water storage.
• Restoration effectiveness varies, indicating potential trade-offs in different regions.

Conclusions:

• Model-based approaches are crucial for quantifying ecosystem service losses and informing restoration decisions.
• Restoration efforts can be effective, but their success is spatially variable, necessitating careful planning.
• A functional equivalency approach, informed by baseline loss estimates, can guide restoration investments.